Bacca is a target for a number of clubs according to Sullivan, who suggested the Colombian is currently "hanging about looking to get the best deal".

Sampdoria striker Eder (not that one) has emerged as an alternative in the meantime, Calcio Mecato have claimed. The Italian international has struggled to recapture his early-season form since moving to Inter Milan on loan and United could make a £12.5 million bid, removing the Nerazzurri of their obligation to buy him outright.

Italy's Eder scoring against Sweden

The name of another striker has resurfaced in the Daily Mail. Manchester City youngster Tyrese Campbell, son of ex-Arsenal and Everton front man Kevin, is still said to be a target despite the recent capture of Ashley Fletcher from cross-city rivals United.

Meanwhile, Diafra Sakho is to remain a Hammers player, while Andy Carroll won't be leaving at all. Sullivan added: "He (Sakho) is not for sale until we get players in. Until we bring strikers in, we simply cannot let strikers go."

Sakho has been strongly linked with a move to Sunderland

Sticking with outgoings, Sky Sports have reported that an official approach has been made by Manchester City for teenager Reece Oxford, who is said to be valued at £15 million.

The Irons reportedly turned down Newcastle's loan offer earlier this summer, along with Red Bull Leipzig's £10 million bid.

Another approach has been made for Oxford

And another United midfielder, Pedro Obiang, is a target for Cagliari according to Tuttosport, following the summer arrival of Havard Nordtveit in east London.